NutriDex

The Supplement Research Compendium
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Bee Propolis

Bee resin used for mouth ulcers, sore throats and blood-sugar support.

Moderate evidence 🛡️Gut & Immune

✚ Updated · How we grade evidence

Evidence tier
Moderate
Research weight
Citations
7 verified / 7
Classification
Gut & Immune
❝
What the evidence says. Graded moderate: meta-analyses of RCTs show real, modest improvements in glycemic control (HbA1c ~ -0.5%) and lower rates of severe oral mucositis, but many trials are small, short, heterogeneous in propolis source/composition, and several oral-ulcer reviews rate the certainty as very low. (Moderate evidence: Several controlled trials; effects real but modest or context-dependent.)

What is Bee Propolis?

Bee Propolis is a gut and immune supplement used for soothe mouth ulcers (canker sores). NutriDex grades the human evidence as Moderate. Propolis is a resinous mixture honeybees make from plant buds and use to seal their hive; it is rich in flavonoids and phenolic acids with antioxidant, antimicrobial and anti-inflammatory activity. The best human evidence is in type 2 diabetes: pooled RCTs report lower fasting glucose (roughly 13–15 mg/dL) and HbA1c (about 0.4–0.6%), plus modest drops in LDL, CRP and systolic blood pressure. Propolis mouthwash cuts the odds of severe oral mucositis during cancer therapy by about two-thirds, and topical or systemic propolis appears to speed healing and ease pain of recurrent mouth ulcers, though that evidence is rated very low certainty. A standardized oral spray shortened uncomplicated upper-respiratory symptoms in one trial. Effects are real but generally small, and propolis composition varies enormously by geographic source, so results may not transfer between products.

Purported Benefits

✓Soothe mouth ulcers (canker sores)
✓Reduce chemo/radiation mouth sores
✓Lower fasting blood sugar & HbA1c
✓Ease sore throat / cold symptoms

Evidence by outcome

The same supplement can be well-proven for one use and unproven for another — here is the human evidence graded outcome by outcome.

OutcomeEvidenceEffectStudies
Lower fasting glucose & HbA1c (type 2 diabetes)Multiple meta-analyses show ~13-17 mg/dL fasting-glucose and ~0.4-0.6% HbA1c drops; composition varies by source. Moderate ↑ benefit · small 4
Reduce chemo/radiation oral mucositis5-RCT meta-analysis of propolis mouthwash cut odds of severe mucositis (OR 0.35); modest sample size. Moderate ↑ benefit · moderate 1
Soothe recurrent mouth ulcers (canker sores)10-RCT systematic review suggests faster healing and less pain/relapse, but certainty rated very low. Preliminary ↑ benefit · small 1
Lower systolic blood pressureMeta-analysis shows ~5.6 mmHg systolic drop with no diastolic change; secondary metabolic finding. Preliminary ↑ benefit · small 1
Ease sore throat / cold (URTI) symptomsSingle RCT (n=122) of a standardized poplar-propolis spray gave faster URTI remission by day 3. Preliminary ↑ benefit · small 1

Dosing & Compounds

Typical Dose
Oral: 300–500 mg/day standardized extract; topical/mouthwash: alcoholic or aqueous propolis solution applied to the affected area, composition varies widely by source.
Active Compounds
Flavonoids (galangin, pinocembrin, chrysin)Caffeic acid phenethyl ester (CAPE)Phenolic acids

Safety & Cautions

Propolis is generally well tolerated short-term, but it is a notable allergen: contact dermatitis, mouth/lip irritation, swelling and (rarely) anaphylaxis occur, especially in people allergic to bees, pollen, ragweed or chrysanthemum — about 1–7% of patch-tested patients react. Its flavonoids may slow clotting, so use caution with anticoagulants/antiplatelets (warfarin, apixaban, clopidogrel, aspirin) and stop at least two weeks before surgery. It may add to the glucose-lowering effect of antidiabetic drugs — monitor for hypoglycemia. Avoid in pregnancy and limit in breastfeeding due to insufficient safety data. Educational only — always check with your doctor or pharmacist before combining Bee Propolis with any medicine.

Key Studies

Meta-analysis Karimi 2025 ✓ PubMed
Meta-analysis of 13 RCTs: propolis cut fasting glucose ~15.3 mg/dL, 2-h glucose ~35 mg/dL, HbA1c 0.58%, LDL 11.5 mg/dL in type 2 diabetes.
Meta-analysis Zhang 2025 ✓ PubMed
12 RCTs (n=731): propolis lowered fasting glucose, HbA1c 0.44%, HOMA-IR and CRP, and improved LDL/HDL in type 2 diabetes.
Systematic review Roberts 2024 ✓ PubMed
10 RCTs (n=825): topical/systemic propolis may shorten healing, reduce pain and relapse of recurrent aphthous ulcers; certainty very low.
Meta-analysis Qu 2025 ✓ PubMed
Meta-analysis: propolis supplementation lowered systolic blood pressure by ~5.6 mmHg; no significant change in diastolic pressure.
Meta-analysis Hallajzadeh 2021 ✓ PubMed
Meta-analysis of RCTs: propolis lowered fasting glucose ~17 mg/dL, HbA1c 0.42% and insulin, plus CRP and liver enzymes, with no change in lipids.
Meta-analysis Kuo 2018 ✓ PubMed
Meta-analysis of 5 RCTs (n=209): propolis mouthwash cut odds of severe oral mucositis during cancer therapy (OR 0.35, 95% CI 0.18–0.70).
RCT Esposito 2021 ✓ Full text
RCT (n=122): standardized poplar-propolis oral spray gave faster remission of uncomplicated URTI symptoms by day 3 vs placebo.
7 sources cited · 7 verified Search all studies on PubMed ↗

Common questions about Bee Propolis

What is Bee Propolis used for?

Bee Propolis is most often taken for Soothe mouth ulcers (canker sores), Reduce chemo/radiation mouth sores, Lower fasting blood sugar & HbA1c, Ease sore throat / cold symptoms. Bee resin used for mouth ulcers, sore throats and blood-sugar support.

Does Bee Propolis work — what does the evidence say?

Moderate evidence. Several controlled trials; effects real but modest or context-dependent. Propolis is a resinous mixture honeybees make from plant buds and use to seal their hive; it is rich in flavonoids and phenolic acids with antioxidant, antimicrobial and anti-inflammatory activity. The best human evidence is in type 2 diabetes: pooled RCTs report lower fasting glucose (roughly 13–15 mg/dL) and HbA1c (about 0.4–0.6%), plus modest drops in LDL, CRP and systolic blood pressure. Propolis mouthwash cuts the odds of severe oral mucositis during cancer therapy by about two-thirds, and topical or systemic propolis appears to speed healing and ease pain of recurrent mouth ulcers, though that evidence is rated very low certainty. A standardized oral spray shortened uncomplicated upper-respiratory symptoms in one trial. Effects are real but generally small, and propolis composition varies enormously by geographic source, so results may not transfer between products.

What is the typical dose of Bee Propolis?

Oral: 300–500 mg/day standardized extract; topical/mouthwash: alcoholic or aqueous propolis solution applied to the affected area, composition varies widely by source.

Is Bee Propolis safe? Any cautions or side effects?

Propolis is generally well tolerated short-term, but it is a notable allergen: contact dermatitis, mouth/lip irritation, swelling and (rarely) anaphylaxis occur, especially in people allergic to bees, pollen, ragweed or chrysanthemum — about 1–7% of patch-tested patients react. Its flavonoids may slow clotting, so use caution with anticoagulants/antiplatelets (warfarin, apixaban, clopidogrel, aspirin) and stop at least two weeks before surgery. It may add to the glucose-lowering effect of antidiabetic drugs — monitor for hypoglycemia. Avoid in pregnancy and limit in breastfeeding due to insufficient safety data.

How many studies support Bee Propolis?

NutriDex cites 7 sources for Bee Propolis, graded "Moderate".

Cite this page
APA

Peh, D. (2026). Bee Propolis: Benefits, Dosage, Side Effects & Evidence. NutriDex — The Supplement Research Compendium. Retrieved 26 Jun 2026, from https://nutridex.info/s/propolis

BibTeX
@misc{nutridex_propolis,
  author       = {Peh, Daryl},
  title        = {Bee Propolis: Benefits, Dosage, Side Effects \& Evidence},
  year         = {2026},
  howpublished = {NutriDex --- The Supplement Research Compendium},
  url          = {https://nutridex.info/s/propolis},
  note         = {Reviewed by Dr Daryl Peh, MBBS Singapore, MMed FM. Accessed 2026-06-26}
}

For medical claims, citing the underlying primary studies linked above is preferred. NutriDex is an educational reference, not medical advice.

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